Anchors are indispensable tools for securely anchoring screws in various materials. Whether in concrete, masonry, drywall, or wood, anchors provide stability and hold, even under heavy loads. They are available in a wide variety of shapes and materials to meet the requirements of diverse applications. This article will tell you everything you need to know about anchors, their types, properties, and uses.

What are dowels?

Anchors are fasteners that are inserted into a material to securely hold screws or other fasteners. They work through friction, positive locking, or a combination of both. Anchors are often made of plastic, metal, or a combination of these materials and are designed to adapt to different substrates.

Types of dowels

Choosing the right anchor depends on the type of substrate, the load, and the application. Here are the most common types of anchors:

1. Universal dowel

Universal wall plugs are suitable for a wide variety of materials, including concrete, masonry, and drywall. They adapt flexibly to the substrate and provide a secure anchor.

2. Frame dowels

Frame anchors are often used for heavy structures such as window frames, door frames, or balconies. They are ideal for solid materials like concrete or brick.

3. Cavity wall plugs

Cavity wall anchors are specifically designed for thin or hollow materials such as plasterboard. They expand behind the board, ensuring a secure hold.

4. Metal dowels

Metal dowels offer particularly high load-bearing capacity and are ideal for use in heavy constructions or in damp environments because they are corrosion-resistant.

5. Special dowels

Special anchors such as heavy-duty anchors, nail anchors or expansion anchors are designed for specific applications and offer special properties depending on the requirements.

Properties of dowels

Dowels are characterized by a number of properties that make their use safe and efficient:

  • Load-bearing capacity: High-quality dowels offer a secure hold, even under heavy loads.
  • Flexibility: Different dowel types allow anchoring in a wide variety of materials.
  • Corrosion resistance: Metal or plastic dowels are durable and resistant to environmental influences.
  • Easy installation: Dowels can be inserted quickly and easily.
  • Safety: They prevent screws from being pulled out of the material.

Applications of dowels

Dowels are used in many industries and applications:

1. Construction

In construction, dowels are used to anchor load-bearing structures, facade elements, or railings. Their stability makes them indispensable for safe building projects.

2. Photovoltaics

In photovoltaics, dowels are used to securely fasten mounting systems to concrete foundations or tiled roofs. They ensure the stability of the entire system.

3. Interior finishing

Dowels are used for mounting shelves, lamps, or partitions. They ensure a secure hold, even in thin materials like drywall.

4. DIY

Dowels are indispensable for DIY projects. They allow for the easy mounting of pictures, mirrors, or curtain rods.

5. Industry

In industry, dowels are used for fastening machines, production plants or heavy-duty structures.

Advantages of dowels

Dowels offer numerous advantages that make them an indispensable component:

  • Stability: They ensure a secure hold in various materials.
  • Cost efficiency: High-quality dowels are durable and reduce maintenance.
  • Easy to use: Dowels can be installed with just a few tools.
  • Versatility: They are suitable for a wide variety of applications.
  • Safety: They prevent connections from failing under stress.

Tips for choosing the right dowels

The selection of the appropriate dowel depends on the requirements of your project:

  • Substrate: Choose the dowel type that is suitable for the material (concrete, plasterboard, brick).
  • Load: Consider the load that the anchor must bear.
  • Material: Corrosion-resistant dowels are ideal for damp environments.
  • Installation method: Some dowels require special tools, others can be used with standard tools.

Conclusion: Dowels as the basis for secure fastenings

Anchors are an indispensable fastener used in numerous applications. Their versatility, stability, and ease of use provide the foundation for secure and durable connections. Whether in construction, industry, or DIY projects, choosing the right anchor is crucial for ensuring reliable fastening.

This existing glossary article was reviewed and approved on 14 October 2026. Time-sensitive information still refers to its original publication context unless the article states otherwise. It does not replace installation instructions or confirm compatibility with a particular roof tile model.

Machine-assisted translation. The German version remains available.

Data sheet and installation guideOriginal source